Upon a newborn's first breath, pulmonary arterioles
A. constrict.
B. dilate.
B
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As an axon approaches the cell onto which it will terminate, it generally branches repeatedly into several
A. teloaxons. B. dendrites. C. collateral axons. D. telodendria. E. neurolemmocytes.
The middle primary germ layer is called ________, which gives rise to a gelatinous material called ________, which then gives rise to different types of connective tissue such as bone, cartilage, and blood.
A. ectoderm; mesenchyme B. ectoderm; stem cells C. mesoderm; mesenchyme D. mesoderm; fibroblasts E. endoderm; mesenchyme
What do lutein cells develop from?
A. The corpus luteum B. The granulosa cells C. The corona radiata D. The corpus albicans E. The theca interna
Enterokinase
A. is a hormone. B. triggers the release of bile from the gallbladder. C. activates trypsinogen. D. increases duodenal motility. E. digests proteins.